A Fluorescently Ratiometric Natural Probe for Selective Detection of Sulfur Dioxide Derivative and Host-Guest Supramolecular Regulation

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  • TONG Xingyu
    Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University
  • YE Ting
    Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University
  • YU Yali
    Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University
  • GAO Longlong
    Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University
  • FEI Yifan
    Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University
  • ZHANG Qingqing
    Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University
  • GAO Heng
    Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University
  • YAN Chenxiao
    Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University
  • SHAO Yong
    Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University

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<p>Natural sanguinarine (SG) was first used as a fluorescent probe to develop a novel ratiometric sensor for selective HSO3− detection. The nucleophilic addition reaction of HSO3− occurs at the C=N+ group of SG, and subsequent breakage of the conjugated π cycle leads to a decrease in the SG iminium fluorescence that is accompanied by an increase in the alkanolamine fluorescence. Therefore, a ratiometric fluorescence method with a large wavelength shift can be established for HSO3− detection. Furthermore, cucurbit[8]uril was used as an efficient host to encapsulate SG for an improved selectivity for HSO3− detection over H2S. Our method benefits include little interference from other common anions and cations for HSO3− detection, suggesting a promising application in real sample analysis. Besides sensor development, the interaction of the natural SG with HSO3− was first demonstrated in this work to further get an insight into SG’s pharmacology.</p>

収録刊行物

  • Analytical Sciences

    Analytical Sciences 36 (3), 367-372, 2020-03-10

    社団法人 日本分析化学会

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